Original raisers
Yorklets
The Shooting Equipment (SE) raisers from Intershoot fit straight on the rear of the original 75, (just tried one) the rears are a universal fitting for Walther/Anschutz/FWB, BUT to get a sight line raised you also need the front raised as well, and the 75 has a cast tube fitting front site, if you just fit a rear you'll just move you sight line to shooting very high.
Have Fun
Robin
Walther KK500 Alutec expert special - Barnard .223 "wilde" in a Walther KK500 Alutec stock, mmm...tasty!! - Keppeler 6 mmBR with Walther grip and wood! I may be a Walther-phile?